Need Zinc ore 40% - 10.000 MT x 12

We need Zinc ore 40% for two large Chineses;

as per details:
Buyer A: Zinc Ore 40% above 1-10 mm;10.000 MT x 12 months CIF Tianjin.

Buyer B: Zinc Ore 40% Min 03;180.000 MT over 12 months;100% LC.

NOTE: They only wish deal with miner not reseller; visiting mine is must